Process of briqueting.



PATENTED NOV. 27, 1906.

R. SGHO RR, PROCESS OF B'RIQUETING.

APPLICATION FILED 1330.5, 1905.

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UNITED STATES. PATENT OFFICE.

ROBERT SCHORR, OF SAN FRANCISCO, CALIFORNIA.

PROCESS OF BRIQUETING.

Specification of Letters Patent.

Patented Nov. 27,1906.

Application filed December 5, 1905. Serial No. 290,343.

To 0,64 w/wm, it may concern:

Be it known that I, ROBERT SoHoRR, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Processes of Briqueting, of which the following is a s ecification.

lhis inventionrelates to an improved process of briqueting of fuels and other substances, the object of the invention being to provide a process which will effect an economy in the materials used and in the apparatus employed, will be more rapid in operation than those heretofore employed, and which will be under complete control.

In the accompanying drawing the figure is a diagrammatic view of one form of an apparatus for use with my improved process.

In carrying out this process the raw solid fuel is introduced by the supply-conduit 1 into the front portion of a chamber 3. It is there heated as high as possible without causing self-ignition by steam introduced through the perforated pipe 41, the bottom of the chamber itself being heated by the steam-- jacket 5. It is also agitated by stirringarms 7 on a shaft 8, driven bybevel-gearing 9 from any suitable source of power. The binding material, which may be hard pitch, soft-coal-tar pitch, coal-tar, asphaltum, or other oil residue, is introduced by the conduit 2 into the rear ortion of the mixing-chamber 3. This binding agent is added in a liquid state and at a temperature of about 400 Fahrenheit, and the mixed fuel and binder are again stirred by the stirring-arms 7, and heated by steam introduced through a perforated ipe 4.

The fue and binder after having been the mixture is cooled by an air-blast leading into said chamber by a conduit 15 from a blower 16, the vapors passing up by a ventpipe 17. The mixture 1s also cooled,if found necessary, by the surface over which the mixture travels being water-jacketed, as shown at 18. The mixture thus cooled is discharged onto a conveyor 19, by which it is conveyed to the briqueting-machine.

The following are the advantages of this process: The preliminary heating of the solid fuelliquefies the bituminous matter therein, which then acts as a binder and effects a saving in the proportion of external binder required. It also avoids the chilling of the external binder, which acts more efliciently when hot and thoroughly fluid, since it can thus penetrate thoroughly the interstices of the mixture.

The step of stirring the mixture While cooling is important, since it imparts thereto the granular or floury condition necessary to make the material fill the press-molds in making the briquets. Moreover, without stirring the cooling effect, even with an airblast, is very slow, requiring a very long travel of the hot. material, necessitating an extensive supply of conveyers, occupying a large area.

I claim The process of making coal briquets consisting in first, heating the pulverized coal; second, melting the organic binder separately therefrom; third, mixing both substances while hot; fourth, reducing the mixture to a granular, floury condition by continued mixing under an air-blast; and, fifth,

supplying the same while floury and cool to the press to make briquets, substantially as described.

In witness whereof I have hereunto set my I hand in the presence of two subscribing witnesses.

ROBERT soHoRR.

Witnesses:

BESSIE GORFINKEL, ANNIE PETERSON. 

